Support pillow



FIG. 1 is a top perspective view of a support pillow, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof, the right-side elevation view being a mirror thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof; and,

FIG. 7 is a top perspective view of the support pillow in a second orientation. 

CLAIM The ornamental design for a support pillow, as shown and described. 